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 At the end of a certain year, the four companies with the largest number of home Internet users in the United States were Microsoft, Time Warner, Yahoo, and Google, with a combined audience of 284 million users. Taking x to be the Microsoft audience in millions, y the Time Warner audience in millions, z the Yahoo audience in millions, and u the Google audience in millions, it was observed that

z − u = 3(x − y) + 6

x + y = 50 + z + u

and x − y + z − u = 42.

How large was the audience of each of the four companies at the end of that year?

1 Answer

  • Bryce
    Lv 7
    1 month ago

    x=88, y=79, u=42, z=75

    I solved it by using a 4x4 equation solver online.

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